Doors & Entrances
 
   
  Entrance PairRocklin Glass & Mirror has the experience needed to fabricate and install commercial aluminum doors and entrances needed for any type of business or application. The entrance may vary from the commonplace single door used by a small retail business to a large, custom painted door with "panic bars" and custom locking requirements. There are three major manufacturers of aluminum entrance doors on the West Coast: Kawneer, US Aluminum, and Vistawall. Rocklin Glass & Mirror can supply any brand to suit your needs.

Some entrance doors swing in one direction only which usually means the door if "offset" and swings on pivots or hinges. Other doors may swing in both directions which means it is "center hung" and swings on pivots, one of which is usually the door closer at either the top or bottom of the door. There is a great difference in functionality between a center-hung door and an offset-hung door. Usually high volume retail stores will use center-hung doors to allow easy access both into and out of the store. Customers carrying products in their hands merely need to push against the cross-bar on the door in order to open it. The drawback about such center-hung doors is that is relies on weather-stripping around the vertical edges of the door which tends to wear out after several years of constant use and then begins to leak cold air in the winter or allow cool air-conditioned air to escape in the summer. These doors seldom have any weather-stripping at all along the top edge other than the small 1/8" clearance to the top header. Another drawback is that on very windy days, these doors can blow open unexpectedly, something not seen on offset-hung doors.

   

Center-hung Door Jamb

Offset-hung Door Jamb
   

Depending upon the use of the property, certain fire and safety codes may mandate the use of "panic bar" hardware on the door which prevents anybody from being locked inside. In such cases, these doors are always offset-hung in that they can swing out only with the panic bar mounted on the inside surface of the door. Sometimes these panic bars are wired to an alarm system to alert the business that a door has been unexpectedly opened for some reason. The design of such panic devices can vary from a surface applied latch-bolt type or a concealed vertical rod to a built-into the door. The actual portion of the panic device that a person presses upon to activate it can vary from a simple horizontal rod to a flat push panel.